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Doctors Medicines MCQs Q&A

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The moon looks blood red during a total lunar eclipse because some of the sunlight passes through Earth’s atmosphere to reach the moon. As the white light breaks up while passing through the atmosphere, most of its blue-colored wavelengths are absorbed and scattered. The remaining red wavelengths light up the moon in blood-red color. Which of the following statements do not support the assertion of the above-given statement? I: The moon looks blood red during a total lunar eclipse as the white light breaks up due to the Earth's atmosphere where most of its red-colored wavelengths are absorbed. II: The moon looks blood red during a total lunar eclipse as the earth blocks the white light to travel to the moon.
Skin Reflectance oximeter depends on monitoring backscattered lights in how many wavelengths?
How many LED’s are used in Pulse oximeter probe?
Law obeyed by Pulse Oximeter is _______
A pulse oximeter shows the percentage of venous hemoglobin in the oxyhemoglobin (HbO2) and hemoglobin (Hb).
A pulse oximeter is useful in any setting where a patients oxygenation is unstable.
If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?
If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as λUV, λVIS and λIR respectively, then which one of the following gives the correct relationship among these wavelengths?
The sun emits a maximum amount of radiation at wavelengths near ____, while the earth emits maximum radiation near wavelengths of ____.
A dishonest shopkeeper purchased one kg pulse at 120 Rs/kg and sell at 150 Rs/kg. He is giving only 800 gm of pulse instead of 1 kg while selling. Which of the following is correct? I. Profit made by the shopkeeper is 56.25% II. Profit on 2 kg pulse is Rs. 100